Simplify the rational expression. If the rational expression cannot be simplified, so state.
A. x - y
B. cannot be simplified
C. 
D. x - 2y + 1
Answer: A
Mathematics
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Solve the problem.Find the centroid of the region cut from the first quadrant by the line 
.
A. 
= 
, 
= 
B. 
= 
, 
= 
C. 
= 1, 
= 
D. 
= 
, 
= 1
Mathematics
Solve the problem.In a class of 50 students, 27 are Democrats, 10 are business majors, and 5 of the business majors are Democrats. If one student is randomly selected from the class, find the probability of choosing a Democrat or a business major.
A. 
B. 
C. 
D. 
Mathematics
Use the Law of Exponents to rewrite and simplify the expression.
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Mathematics
Use a calculator to find the approximate value of the composition. Round answers to four decimal places. The expression may be undefined.tan (arcsin (2))
A. 0.8944 B. 0 C. -0.8172 D. Undefined
Mathematics